2012/10/30 袁冬 <yuandong1222@xxxxxxxxx>: > RGW and libRBD are not the same pool, you can`t access aRBD volume with > RGW. The RADOS treats the RBD volume as just a large object. Ok, I think to have understood. RADOS store only object on an existent filesystem (this is why I have to create a FS to use RADOS/Ceph). Now, if that object is accessed by RGW, that object will be a single file stored on the FS but if I'm accessing with RBD, RBD is masking a very large object, stored on FS, as it is a single block device. In this case, can a single block device (for example a huge virtual machine image) be striped across many OSDs to archieve better performance in reading? an image striped across 3 disks, should get 3*IOPS when reading Another question: in a standard RGW/RBD infrastructure (no CephFS), I have to configure only "mon" and "osd" nodes, right? How many monitor nodes is suggested? -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
